Collapse of a Coastal Revetment Due to the Combined Effect of Anthropogenic and Natural Disturbances

Jong Dae Do, Jae-Youll Jin, Weon Mu Jeong, Byunggil Lee, Jin Yong Choi and Yeon S. Chang
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Jong Dae Do: East Sea Environment Research Center, Korea Institute of Ocean Science and Technology, Uljin 36315, Korea
Jae-Youll Jin: East Sea Environment Research Center, Korea Institute of Ocean Science and Technology, Uljin 36315, Korea
Weon Mu Jeong: Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology, Busan 49111, Korea
Byunggil Lee: East Sea Environment Research Center, Korea Institute of Ocean Science and Technology, Uljin 36315, Korea
Jin Yong Choi: Marine Disaster Research Center, Korea Institute of Ocean Science and Technology, Busan 49111, Korea
Yeon S. Chang: Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology, Busan 49111, Korea

Sustainability, 2021, vol. 13, issue 7, 1-18

Abstract: Coastal structures, such as revetments, are built to protect specific areas and facilities from the attack of extreme waves. However, unexpected environmental damage could be induced from these structures when inappropriately applied. Here, we present the results of measurements carried out using a video monitoring system, indicating the rapid collapse of a coastal revetment due to the attack of storm waves. The destruction occurred in sequence; that is, it was initiated by human activities, followed by a natural disaster. First, the beach in front of the revetment was eroded, even under moderate wave conditions, because sediments transported into this area were blocked by a rip-rap jetty. After the beach width was severely reduced due to the erosion, the revetment collapsed when storm waves attacked the area. The destruction seems accidental and inevitable because it was directly caused by the storm. However, it could have been avoided by predicting and preventing the erosion due to the jetty. This study provides insights into sequential processes that lead to the failure of coastal revetments, which could be applied for prevention of similar anthropogenic disasters.

Keywords: coastal erosion; coastal structure failure; video monitoring system (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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